20690548766 has 8 divisors (see below), whose sum is σ = 31226227464. Its totient is φ = 10281806280.

The previous prime is 20690548757. The next prime is 20690548811. The reversal of 20690548766 is 66784509602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31733645 + ... + 31734296.

It is an arithmetic number, because the mean of its divisors is an integer number (3903278433).

Almost surely, 2^20690548766 is an apocalyptic number.

20690548766 is a deficient number, since it is larger than the sum of its proper divisors (10535678698).

20690548766 is a wasteful number, since it uses less digits than its factorization.

20690548766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63468106.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 20690548766 in words is "twenty billion, six hundred ninety million, five hundred forty-eight thousand, seven hundred sixty-six".